CNN reported Wednesday that a so-called terrorism expert that is paid with tax dollars and has even appeared on their own network may be a fraud.

Walid Shoebat claims he converted to Christianity after years as a Palestinian Liberation Organization terrorist who once helped firebomb an Israeli bank in Bethlehem. But CNN’s Jerusalem bureau could find no proof that that his story was true. The Israeli police and the bank had no evidence that a firebombing ever took place.